Try to tell us a little more information next time. Did you mean [url=http://www.runelocus.com/forums/showthread.php?76768-Varrockscape-317-(Released-source-client)]this[/url]?
Can you post your custom shop code?
First try this though:
Open prices.txt and look for the id of your item and change the price, which is the number after the id.
Also open item.cfg. Find the id of your item and change the 3 ids after the description to your desired price.
So, if I wanted to change a Fishing trophies(item id: 26) price from 1 to 20k, I would open prices.txt and change:
Then I would open item.cfg and change:
[code]item = 26 Fishing_trophy Hemenster_fishing_contest_trophy. 1 1 0[/code]
[code]item = 26 Fishing_trophy Hemenster_fishing_contest_trophy. 20000 20000 20000[/code]
Also with your custom shop make sure you're separating the variables with tabs and not spaces.